<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue-2.4.0.js"></script>
</head>
<body>
    <div id="app">
        {{msg}}
        <p>{{_data}}</p>
        <p>{{$options}}</p>
    </div> 
    <script>
       let vm=new Vue({
           el:'#app',
           data:{
              msg:'123',
              lang:'china' 
           }
       })
       console.log(vm);
    </script>
</body>
</html>